Jill has a mixture of sand and iron fillings. The mass of the mixture is 250 g. Jill uses a magnet to seperate the two substances. Then she measures the mass of the sand as 150 g what should be the mass of the iron fillings

The rotational inertia of your leg is greater when your leg is straight bent same either way

What is the downward pull on an object due to gravity? mass weight acceleration velocity

Total constructive interference occurs when two waves with similar frequency and wavelength: Options: 1. have 90 degrees phase difference. 2. are completely out of phase. 3. have 45 degrees phase difference. 4. are completely in phase. 5.

A man dressed in all black is walking down a country lane. Suddenly, a large black car with no lights on comes around the corner and screeches to a halt. How did the car's driver know he was there? this is tricky

You lift a 200 N object

Tony uses the device shown in the diagram to model how an electromagnet is used in his uncle's scrap metal yard.

A flight attendant pulls a 60.0 N flight bag a distance of 239.0 m along a level airport floor at a constant speed. A 21.0 N force is exerted on the bag at an angle of 66.0 degrees above the horizontal. How much work is done on the flight bag?

A girl throws a rock horizontally, with a velocity of 10 m/s, from a bridge. It falls 20 m to the water below. How far does the rock travel horizontally before striking the water?

This is a machine consisting of two wheels of different sizes that rotate together. It is a modified lever.

A source from which organisms generally take elements is called a/an A. biotic community. B. reservoir. C. exchange pool. D. food web.